LTC3621IDCB-23.3

Product Overview

Category

The LTC3621IDCB-23.3 belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators category.

Use

This product is primarily used for voltage regulation in various electronic devices and systems.

Characteristics

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 2.3V
• Output Current: Up to 1A
• Efficiency: Up to 95%
• Package Type: DFN-10
• Operating Temperature Range: -40°C to 125°C

Package and Quantity

The LTC3621IDCB-23.3 is available in a DFN-10 package. It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 2.3V ±2%
• Output Current: Up to 1A
• Dropout Voltage: 200mV at 500mA
• Quiescent Current: 35µA
• Switching Frequency: 1MHz
• Shutdown Current: <1µA
• Load Regulation: ±0.5%
• Line Regulation: ±0.1%
• Operating Temperature Range: -40°C to 125°C
• Package Type: DFN-10

Pin Configuration

The LTC3621IDCB-23.3 has the following pin configuration:

```

---

| | --| VIN VOUT |-- --| GND SW |-- --| FB PG |-- |___________| ```

Pin Descriptions: - VIN: Input Voltage - VOUT: Output Voltage - GND: Ground - SW: Switching Node - FB: Feedback Pin - PG: Power Good Indicator

Functional Features

1. Wide Input Voltage Range: The LTC3621IDCB-23.3 can accept input voltages ranging from 2.7V to 5.5V, making it suitable for a wide range of applications.
2. High Efficiency: With an efficiency of up to 95%, this voltage regulator minimizes power losses and maximizes battery life in portable devices.
3. Low Dropout Voltage: The dropout voltage of only 200mV at 500mA ensures efficient operation even when the input voltage is close to the output voltage.
4. Power Good Indicator: The integrated power good indicator (PG) provides a signal indicating when the output voltage is within regulation limits, enhancing system reliability.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High efficiency reduces power consumption and extends battery life.
• Low dropout voltage enables efficient operation even with low input-output voltage differentials.
• Integrated power good indicator enhances system reliability.

Disadvantages

• Limited output voltage options, as it is fixed at 2.3V.
• Requires additional external components for proper operation.

Working Principles

The LTC3621IDCB-23.3 is a synchronous step-down DC-DC converter. It utilizes a high-frequency switching technique to regulate the output voltage. The input voltage is stepped down to the desired output voltage using an internal power MOSFET switch and a synchronous rectifier. The feedback mechanism adjusts the duty cycle of the switch to maintain a stable output voltage.

Detailed Application Field Plans

The LTC3621IDCB-23.3 can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - IoT devices - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

1. LTC3621IDD-23.3: Similar to LTC3621IDCB-23.3, but available in a DFN-12 package.
2. LTC3621IMS-23.3: Similar functionality, but available in an MSOP-10 package.
3. LTC3621HDD-23.3: Higher input voltage range (up to 36V), available in a DFN-12 package.

These alternative models offer similar features and performance, providing flexibility for different application requirements.

In conclusion, the LTC3621IDCB-23.3 is a voltage regulator IC with a fixed output voltage of 2.3V. It offers high efficiency, low dropout voltage, and a wide input voltage range. While it has limited output voltage options and requires additional external components, its functional features make it suitable for various applications in the electronics industry.